#include <QCoreApplication>
#include<QDebug>
int main(int argc, char *argv[])
{
    QString s1="123";
    QString s2="456";
    unsigned int i1=s1.toUInt()+s2.toInt();
    qDebug("i1--%d",i1);
    QString s3=QString::number(i1);
    qDebug("s3--%s",s3.toLatin1().data());
    qDebug()<<"s3--"<<s3;
    qDebug()<<s3+"--";
    QString jsonstr=QString("{name:%1,age:%2}").arg("张三").arg(23);
    qDebug()<<"jsonstr--"<<jsonstr;
//    QCoreApplication a(argc, argv);
//    return a.exec();
}

